It had been just over two weeks since the "Fusion Wave" hit your city. You had been staying over at your friend Brett's house for the night and were up late playing video games when it happened. Brett's mom Alexis had just come into the room to tell you both to go to bed when a wave of extreme heat passed through the house and you all blacked out.
Next thing you realized was your head was now sitting on Alexis' shoulders, along with her own. You used to tell Brett that his mom was a MILF, but he would never see her the same way you did. She was in her mid 40's, but had an incredibly shapely figure. Not skinny by any means, but she had all the fat in the right places. With hefty E-cup breasts and an ass that could barely fit into chairs, you would always enjoy the sight of her whenever you visited your friend. Now, that body and all its curves belong to both you and Ms. Burke.
You've now had a full 14 days to try and come to terms with your new life as a 17-year-old male head on a 43-year-old female body. As you adjusted over the first days, you found you had no control over Alexis' body, but could feel every inch. This made the adjustment period fairly easy, since there was no re-learning how to function, unlike your friend Brett.
You weren't able to find him after you and Alexis had woken up originally and only heard from him the next day by phone. He had somehow been fused with a single woman in her 30's that lived across town. His body was split right down the middle with hers, each side stuck together. In a strange twist, each head controlled the opposite side of the body, meaning Brett now controlled the woman's side of the body, despite his head still being on his own side.
Your family you heard from the next day as well. Your mom and dad had fused together. No head sat on the upper torso of your father, instead both their faces were moved to your mother's breasts, transplanted on your father's chest. The lower torso, crotch and legs were still your mother's though. They also retained your mother's arms, though they now sat below your father's. Both of your parents shared control of their new body.
Your older sister Riley had her head replacing her friend's head. Her face now had two mouths on the left and right, one belonging to your sister and the other to her friend. Their combination was interesting because they were able to alternate control of each individual limb, depending on who wanted to use it.
You were hoping that eventually you could get some semblance of control from Alexis' body, but it wasn't looking too good for you.
On the Monday morning marking the second week since the incident, you and Alexis were planning to visit your family for lunch. You hadn't seen them since the incident, only heard descriptions and seen a few pictures. You lay in bed awake as you usually did in the mornings, waiting for your body commander to wake up and start the day.